My '69 Dart Swinger 340 came from the factory with geal lube in the A833. When I turned it into a Super Stocker and slick shifted the tranny I tried using B&M ATF in it. After about the 4th race first gear galled on the shaft when I was going 110 mph in 4th gear. That blew the tranny, driveshaft and rear end. When I put everything back together I went back to gear lube and I never had another tranny problem.

Raul